Ron Mott and Carl Banks join Steve Kornacki to discuss New England Coach Bill Belichick's explanation for how his team's footballs could have been slightly deflated during the first half of the AFC Championship game. watch

Republican hopefuls made their pitch to more than a thousand party activists at the Freedom Summit. David Corn, Amanda Terkel and Genevieve Wood break down the details, including why mention of Jeb Bush got such an adverse reaction from the crowd. watch

Steve Kornacki’s panelists catch up on some stories you could have missed this week, including Sesame Street’s apparent jab at the New England Patriots, a $43 hot dog at Davos, and Sarah Palin's interest in 2016. watch

Actor Alan Alda talks with Steve Kornacki about the science of sleep and training the next generation of American scientists on how to communicate about their work. Nancy Giles also joins the conversation. watch